Any experinece with MediaGoblin?

MediaGoblin is a free software media publishing platform that anyone can run. You can think of it as a decentralized alternative to Flickr, YouTube, SoundCloud, etc. It's also:

The perfect tool to show and share your media! Building tools to empower the world through decentralization! Built for extensibility. Multiple media types, including video support! Part of the GNU project and devoted to user freedom. Powered by a community of people like you.